/*
 * Copyright (c) 2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "alkes/tree/Layout.h"

namespace alkes {

Layout::Layout(ILayouter* layouter)
: layouter_(layouter)
{
}

Layout::~Layout()
{
}

void Layout::setLayouter(ILayouter* layouter)
{
    layouter_ = layouter;
}

bool Layout::addElement(Visual* element)
{
    return visual_container_.push(element);
}

void Layout::updateLayout()
{
    if (!layouter_)
        return ;

    layouter_->beginLayout(getRect());

    Deque::Iterator iter = visual_container_.getFirst();
    uint32_t i = 0;
    Point2D pos;
    Visual* v;

    while (iter)
    {
        v = iter_cast<Visual*>(iter);

        layouter_->calcPosition(i, v->getSize(), pos);

        v->setDest(pos);

        ++i;
    }

    layouter_->endLayout();
}

void Layout::onResize()
{
    updateLayout();
}

bool Layout::onUpdate(UpdateContext& uc)
{
    Deque::Iterator iter = visual_container_.getFirst();
    Visual* v;
    bool updated = false;

    while (iter)
    {
        v = iter_cast<Visual*>(iter);
        updated = v->update(uc) || updated;
        iter = iter->getNext();
    }

    return Visual::onUpdate(uc) || updated;
}

void Layout::onRender(GraphicsContext& gc)
{
    Deque::Iterator iter = visual_container_.getFirst();

    while (iter)
    {
        iter_cast<Visual*>(iter)->render(gc);
        iter = iter->getNext();
    }
}

}
